Abstract
Passive optical networks are the main technology behind the surge of Gigabit broadband services. As the bandwidth demand continues to increase, the wavelength dimension is added on top of the time dimension. Multiple wavelengths pose a challenge but also an opportunity to further optimize the network operation because the dynamic traffic pattern in which there is significant difference between peak and off-peak hours. Wavelength-agility enables dynamic sharing of both wavelengths and timeslots but requires tunable transceivers in ONUs with tuning times below 150 ms. It increases traffic handling capacity by 36.9% and saves 33% power as compared to wavelength-fixed because the traffic load can spread among wavelengths in peak time while some wavelengths can be shut down in off-peak time.
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Acknowledgement
This work was supported by the Newton Fund Institutional Links through the U.K. Department of Business, Energy, and Industrial Strategy and managed by the British Council under Grant 429715093.
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Tran, NC., Bui, ND., Bui, TT. (2021). Challenges and Merits of Wavelength-Agile in TWDM Passive Optical Access Network. In: Tran, DT., Jeon, G., Nguyen, T.D.L., Lu, J., Xuan, TD. (eds) Intelligent Systems and Networks . ICISN 2021. Lecture Notes in Networks and Systems, vol 243. Springer, Singapore. https://doi.org/10.1007/978-981-16-2094-2_4
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DOI: https://doi.org/10.1007/978-981-16-2094-2_4
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